Barbara McQuade, former U.S. attorney, explains to Rachel Maddow the seriousness of the witness tampering accusation against Donald Trump campaign manager Paul Manafort and how Robert Mueller's prosecutors are likely to use it in their case.

By Terray Sylvester PAHOA, Hawaii (Reuters) – A stream of lava blocked a Hawaii highway on Sunday that serves as an escape route for coastal residents, while the first known serious injury was reported from fresh explosive eruptions from the Kilauea volcano. A homeowner on Noni Farms Road who was on a third-floor balcony had his leg shattered from his shin to his foot when hit by lava spatter, said Janet Snyder, a spokesperson for the Office of the Mayor, County of Hawaii.